A highly efficient automatic demolding device for EVA two-tone shoe soles

Abstract

This utility model discloses a highly efficient automatic demolding device for EVA two-tone shoe soles, relating to the technical field of shoe sole demolding devices. It includes a support and a connecting shaft. A top plate is fixedly connected to the top of the support, and a hydraulic rod is installed on the top of the top plate. An upper mold is fixed to the bottom of the hydraulic rod, and a lower mold is disposed at the bottom of the upper mold. The bottom of the lower mold is fixed to the support, and a top block a is slidably connected to the middle of the lower mold. An ejection mechanism for ejecting the top block a is provided inside the lower mold. In this highly efficient automatic demolding device for EVA two-tone shoe soles, when the mold moves upward and separates from the lower mold, it drives a driving device to move synchronously, thereby driving the ejection mechanism to move as well. This causes the top block a to move upward, ejecting the shoe sole from the lower mold, thus completing the first demolding of the shoe sole. A secondary demolding mechanism also moves synchronously, performing a second complete demolding of the shoe sole in subsequent processes.

Description

Technical Field

[0001] This utility model relates to the technical field of shoe sole demolding devices, specifically a high-efficiency automatic demolding device for EVA two-color shoe soles. Background Technology

[0002] EVA two-tone soles are widely used in athletic shoes, casual shoes, and other fields due to their lightweight, wear-resistant, and strong color layering characteristics. Traditional manual or semi-automatic demolding is inefficient and can easily damage the sole. Therefore, an automatic demolding device in the mold can be used to quickly demold the sole.

[0003] For example, the utility model disclosed in announcement number CN217648809U discloses a quick demolding device for shoe sole production. This quick demolding device for shoe sole production can drive the insertion tube to move upward through the telescopic rod. When the insertion tube moves upward, it can be inserted into the sleeve, so that the sleeve moves upward inside the lower mold base. At the same time, when the sleeve moves upward, it drives the top plate to move, thereby demolding the shoe sole inside the lower mold base from bottom to top, which improves the convenience of shoe sole demolding and solves the problem of inconvenience of manual demolding of shoe soles.

[0004] The quick demolding device for sole production described above uses a drive mechanism to move the top plate upward during sole demolding, thereby ejecting the sole formed in the lower mold. However, this ejection method requires a separate drive mechanism, which has poor synchronization with the demolding device. Furthermore, since the top plate is in contact with the sole during its formation, it adheres to the sole. Even after the sole is ejected from the lower mold, it will still adhere to the top plate, making it difficult to achieve complete demolding and inconvenient to remove the sole. Utility Model Content

[0005] The purpose of this invention is to provide a highly efficient automatic demolding device for EVA two-tone shoe soles, in order to solve the problems mentioned in the background art, where the ejection method of existing automatic demolding devices requires a separate drive mechanism, resulting in poor synchronization with the demolding device. Furthermore, since the top plate is in contact with the shoe sole during the molding process, it will adhere to the shoe sole. Thus, even after the shoe sole is ejected from the lower mold, it will still adhere to the top plate, making it difficult to achieve complete demolding and inconvenient to remove the shoe sole.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency automatic demolding device for EVA two-tone shoe soles, comprising a bracket and a connecting shaft. A top plate is fixedly connected to the top of the bracket, a hydraulic rod is installed on the top of the top plate, an upper mold is fixed to the bottom of the hydraulic rod, a lower mold is provided at the bottom of the upper mold, and the bottom of the lower mold is fixed to the bracket. A top block a is slidably connected to the middle of the lower mold, and an ejection mechanism for ejecting the top block a is provided inside the lower mold. A driving mechanism for driving the ejection mechanism is provided on both sides of the upper mold. A secondary demolding mechanism is provided on both sides of the top block a.

[0007] Furthermore, the driving mechanism includes a rack rod fixed to one side of the upper mold, a gear at the bottom of the rack rod, one side of the gear being rotatably connected to the bracket via a rotating shaft, and a connecting shaft fixed to the other side of the gear, with a one-way bearing connected to one end of the connecting shaft.

[0008] Furthermore, a synchronous pulley a is fixed to one side of the one-way bearing, a synchronous belt is sleeved on the outer side of the synchronous pulley a, and a synchronous pulley b is sleeved on one side of the synchronous belt.

[0009] Furthermore, the ejection mechanism includes a spring sleeved in the middle of the ejector block a, one end of the spring abutting against the lower mold, an eccentric wheel abutting against the bottom of the ejector block a, one side of the eccentric wheel being rotatably connected to the bracket via a rotating shaft, and the other side of the eccentric wheel being fixed to the synchronous wheel b.

[0010] Furthermore, the secondary demolding mechanism includes connecting rods fixedly connected to the bottom of both ends of the upper mold, one end of the connecting rod is fixedly connected to a protrusion, and the other end of the connecting rod is slidably connected to a connecting sleeve. The connecting sleeve has a protrusion and a straight groove that match the protrusion inside.

[0011] Furthermore, a lever is fixedly connected to the bottom of the connecting sleeve. One end of the lever is rotatably connected to a connecting rod a via a rotating shaft. One end of the connecting rod a is rotatably connected to a straight rod via a rotating shaft. One end of the straight rod is rotatably connected to a connecting rod b via a rotating shaft. One end of the connecting rod b is rotatably connected to a top block b via a rotating shaft. The outer side of the top block b is slidably connected to the lower mold.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the efficient automatic demolding device of the EVA two-color shoe sole will drive the drive device to move synchronously when the mold moves up and separates from the lower mold, thereby driving the ejection mechanism to move as well, driving the top block a to move up and eject the shoe sole in the lower mold, thereby completing the first demolding of the shoe sole. The secondary demolding mechanism will also move synchronously and perform a second complete demolding of the shoe sole in the subsequent process.

[0013] 1. The efficient automatic demolding device for the EVA two-color sole moves the upper mold upward by activating the hydraulic rod. The drive mechanism also moves synchronously and drives the eccentric wheel to rotate synchronously. This causes the eccentric wheel to push the top block a upward, pushing the top of the sole out and demolding it. When the top plate moves to the highest point, the spring will drive the top block a to reset.

[0014] 2. The upper mold will move the connecting rod upwards together, thereby causing the connecting sleeve to rotate and the lever at the bottom of the connecting sleeve to rotate. The lever will then push the straight rod to move through the connecting rod a, causing the straight rod to push the connecting rod b to rotate. The connecting rod b will push the top block b to move upwards. When the top block a moves downwards, the two ends of the shoe sole will contact the ejected top block b, thereby detaching from the adhesion to the shoe sole. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the lower mold of this utility model;

[0018] Figure 4 This utility model Figure 2 A magnified structural diagram at point A;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the gear of this utility model;

[0020] Figure 6 This is a three-dimensional cross-sectional structural diagram of the connecting sleeve of this utility model;

[0021] Figure 7 This utility model Figure 3 A magnified structural diagram at point B.

[0022] In the diagram: 1. Bracket; 2. Top plate; 3. Hydraulic rod; 4. Upper mold; 5. Lower mold; 6. Rack and pinion; 7. Gear; 8. Connecting shaft; 9. One-way bearing; 10. Synchronous pulley a; 11. Synchronous belt; 12. Synchronous pulley b; 13. Eccentric wheel; 14. Top block a; 15. Spring; 16. Connecting rod; 17. Protrusion; 18. Straight groove; 19. Spiral groove; 20. Connecting sleeve; 21. Lever; 22. Connecting rod a; 23. Straight rod; 24. Connecting rod b; 25. Top block b. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figures 1-3 This utility model provides the following technical solution: a high-efficiency automatic demolding device for EVA two-tone shoe soles, including a bracket 1 and a connecting shaft 8. A top plate 2 is fixedly connected to the top of the bracket 1, a hydraulic rod 3 is installed on the top of the top plate 2, an upper mold 4 is fixed to the bottom of the hydraulic rod 3, a lower mold 5 is provided at the bottom of the upper mold 4, and the bottom of the lower mold 5 is fixed to the bracket 1; a top block a14 is slidably connected to the middle of the lower mold 5, and an ejection mechanism for ejecting the top block a14 is provided inside the lower mold 5. Both sides of the upper mold 4 are provided with driving mechanisms for driving the ejection mechanism to move; when the shoe sole is being molded, the high-efficiency automatic demolding device for EVA two-tone shoe soles uses the hydraulic rod 3 to drive the upper mold 4 to move down and merge with the lower mold 5, and then injection molding is performed through the injection port in the lower mold 5. The merged mold can mold the shoe sole, and the shoe sole can be removed after cooling.

[0025] Please see Figures 1-5 The driving mechanism includes a rack 6 fixed to one side of the upper mold 4, a gear 7 at the bottom of the rack 6, one side of the gear 7 being rotatably connected to the bracket 1 via a rotating shaft, and a connecting shaft 8 fixed to the other side of the gear 7. One end of the connecting shaft 8 is connected to a one-way bearing 9. A synchronous pulley a10 is fixed to one side of the one-way bearing 9, a synchronous belt 11 is sleeved on the outer side of the synchronous pulley a10, and a synchronous pulley b12 is sleeved on one side of the synchronous belt 11. When demolding the shoe sole formed in the mold, the upper mold 4 is moved upward by activating the hydraulic rod 3. The upper mold 4 will drive the rack 6 to move synchronously, so that the rack 6 and the gear 7... When the gear 7 meshes, it will drive the connecting shaft 8 on one side to rotate. At this time, when the connecting shaft 8 rotates with the one-way bearing 9, the one-way bearing 9 will not rotate on its own, but will drive the synchronous pulley a10 on one side to rotate. The synchronous pulley a10 will then drive the synchronous pulley b12 to rotate through the synchronous belt 11. The eccentric wheel 13 on one side of the synchronous pulley b12 will rotate synchronously. When the rack rod 6 moves down and meshes with the gear 7, the connecting shaft 8 on one side of the gear 7 will still rotate. However, at this time, the inner side of the one-way bearing 9 will rotate on its own, so it will not drive the synchronous pulley a10 on one side to rotate. This can prevent the top block a14 from moving up when the upper mold 4 moves down and merges with the lower mold 5.

[0026] Please see Figures 3-4The ejection mechanism includes a spring 15 sleeved in the middle of the top block a14. One end of the spring 15 abuts against the lower mold 5. An eccentric wheel 13 abuts against the bottom of the top block a14. One side of the eccentric wheel 13 is rotatably connected to the bracket 1 via a rotating shaft, and the other side of the eccentric wheel 13 is fixed to the synchronous wheel b12. When the eccentric wheel 13 rotates, it will push the top block a14 to move upward. The top block a14 will squeeze the spring 15 sleeved on the outside and push the top sole to move upward, so that the sole is demolded. When the top plate 2 moves to the highest point, the rack rod 6 will disengage from the gear 7. At this time, the spring 15 will drive the top block a14 to reset.

[0027] The above operations facilitate automatic demolding of the shoe sole when the upper mold 4 and the lower mold 5 are separated.

[0028] Example 2:

[0029] Please see Figure 3 , Figure 6 and Figure 7 Based on Embodiment 1, a secondary demolding structure for complete demolding of the shoe sole is also disclosed. The specific structure is as follows: a secondary demolding mechanism is provided on both sides of the top block a14. The secondary demolding mechanism includes a connecting rod 16 fixedly connected to the bottom of both ends of the upper mold 4. A protrusion 17 is fixedly connected to one end of the connecting rod 16. A connecting sleeve 20 is slidably connected to one end of the connecting rod 16. The interior of the connecting sleeve 20 is provided with a protrusion 17 and a straight groove 18 that match the protrusion 17. A lever 21 is fixedly connected to the bottom of the connecting sleeve 20. A connecting rod a22 is rotatably connected to one end of the lever 21 through a pivot. A straight rod 23 is rotatably connected to one end of the connecting rod a22 through a pivot. A connecting rod b24 is rotatably connected to one end of the straight rod 23 through a pivot. A top block b25 is rotatably connected to one end of the connecting rod b24 through a pivot. The outer side of the top block b25 is slidably connected to the lower mold 5.

[0030] Please see Figure 3 , Figure 6 and Figure 7The efficient automatic demolding device for this EVA two-tone sole, in order to prevent the sole from sticking to the top block a14 after demolding, uses a set of connecting rods 16 on each side of the bottom of the upper mold 4. The upper mold 4 moves the connecting rods 16 upwards together, causing the protrusion 17 at the bottom of the connecting rod 16 to slide in the straight groove 18. At this time, the connecting sleeve 20 does not rotate, and the top block b25 does not move upwards. Therefore, when the top block a14 ejects the sole, the sole separates from the top block b25. When the protrusion 17 moves into the spiral groove 19, the connecting sleeve 20 rotates, driving the bottom lever 21 to rotate. The lever 21 then... The connecting rod a22 will push the straight rod 23 to move, which will push the connecting rod b24 to rotate. The connecting rod b24 will then push the top block b25 to move upward. When the upper mold 4 moves to the highest point, the protrusion 17 is still in the spiral groove 19, so the top block b25 will not move downward. At this time, the top block a14 will move downward, and the attached shoe sole will also move downward. Since the two ends of the shoe sole will contact the ejected top block b25 at this time, and the top block a14 will be completely retracted, the top block a14 will detach from the adhesion to the shoe sole, thereby completing the complete demolding of the shoe sole. In this way, the above operation can facilitate the complete demolding of the shoe sole.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency automatic demolding device for EVA two-color shoe soles, comprising a bracket (1) and a connecting shaft (8), wherein a top plate (2) is fixedly connected to the top of the bracket (1), a hydraulic rod (3) is installed on the top of the top plate (2), an upper mold (4) is fixed to the bottom of the hydraulic rod (3), a lower mold (5) is provided at the bottom of the upper mold (4), and the bottom of the lower mold (5) is fixed to the bracket (1); Its features are: The lower mold (5) is slidably connected to the middle of the top block a (14), and the interior of the lower mold (5) is provided with an ejection mechanism for ejecting the top block a (14). Both sides of the upper mold (4) are provided with a drive mechanism for driving the ejection mechanism to move. The top block a (14) is provided with a secondary demolding mechanism on both sides.

2. The efficient automatic demolding device for EVA two-tone shoe soles according to claim 1, characterized in that: The driving mechanism includes a rack (6) fixed on one side of the upper mold (4), a gear (7) is provided at the bottom of the rack (6), one side of the gear (7) is rotatably connected to the bracket (1) through a rotating shaft, and a connecting shaft (8) is fixed on the other side of the gear (7), and a one-way bearing (9) is connected to one end of the connecting shaft (8).

3. The efficient automatic demolding device for EVA two-tone shoe soles according to claim 2, characterized in that: A synchronous pulley a (10) is fixed on one side of the one-way bearing (9), a synchronous belt (11) is sleeved on the outside of the synchronous pulley a (10), and a synchronous pulley b (12) is sleeved on one side of the synchronous belt (11).

4. The efficient automatic demolding device for EVA two-tone shoe soles according to claim 1, characterized in that: The ejection mechanism includes a spring (15) sleeved in the middle of the top block a (14). One end of the spring (15) abuts against the lower mold (5). The bottom of the top block a (14) abuts against an eccentric wheel (13). One side of the eccentric wheel (13) is rotatably connected to the bracket (1) through a rotating shaft. The other side of the eccentric wheel (13) is fixed to the synchronous wheel b (12).

5. The efficient automatic demolding device for EVA two-tone shoe soles according to claim 1, characterized in that: The secondary demolding mechanism includes a connecting rod (16) fixedly connected to the bottom of both ends of the upper mold (4). One end of the connecting rod (16) is fixedly connected to a protrusion (17), and the other end of the connecting rod (16) is slidably connected to a connecting sleeve (20). The connecting sleeve (20) has a spiral groove (19) and a straight groove (18) that match the protrusion (17) inside.

6. The efficient automatic demolding device for EVA two-tone shoe soles according to claim 5, characterized in that: The bottom of the connecting sleeve (20) is fixedly connected to a lever (21). One end of the lever (21) is rotatably connected to a connecting rod a (22) via a rotating shaft. One end of the connecting rod a (22) is rotatably connected to a straight rod (23) via a rotating shaft. One end of the straight rod (23) is rotatably connected to a connecting rod b (24) via a rotating shaft. One end of the connecting rod b (24) is rotatably connected to a top block b (25) via a rotating shaft. The outer side of the top block b (25) is slidably connected to the lower mold (5).

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